Figure 2.

A Schematic of a 52-point (program 24-2) Humphrey Visual Field for a left eye. The point indicator number for each point measured is shown with its position in a visual field. "bs" indicates the two points that make up the blind spot. Points for the right eye are a mirror image, i.e., points are read right to left for each row. B Example of a Humphrey Visual Field with an inferior altitudinal field defect. This example of a visual field shows the difference between the values in decibels of each point in the linear array between a single visual field and those of age-matched controls. Differences in bold are those defining an inferior altitudinal defect.